PURPOSE Scientific research originating from Brazil appears to be rising in several medical fields. Research results are often presented at scientific meetings before publication in peer-reviewed journals. We investigated the publication rate of Brazilian studies presented in American Urological Association (AUA) meetings and compared with the rate of publication of Brazilian oncological studie...

BACKGROUND Abstracts of presentations at scientific meetings are usually available only in conference proceedings. If subsequent full publication of abstract results is based on the magnitude or direction of study results, publication bias may result. Publication bias, in turn, creates problems for those conducting systematic reviews or relying on the published literature for evidence. OBJECT...

Although ‘‘a large number of studies have appeared in the literature that report associations of low penetrance genetic variants with disease,’’ as suggested in the recent CEBP editorial (1), hardly any of these reports have been translated into solid results by replication studies, at least for the common cancers. To some extent this is inevitable, as false-positive associations are an inheren...

Background: Macrosomia is a risk factor for adverse maternal and neonatal outcomes and previous studies have reported different prevalence of macrosomia in Iran. We conducted a meta-analysis to estimate the overall prevalence of macrosomia in Iran. Materials and Methods: A systematic review and meta-analysis was conducted of all published literature pertaining to prevalence rates of macrosomia ...